Knilollert for Trello is a free Chrome add-on developed by Egor Ryzhov. This add-on falls under the category of Browsers and specifically the subcategory of Add-ons & Tools. Knilollert enhances the functionality of Trello by allowing users to add external clickable tracker links to the headers of Trello cards.

With Knilollert, users can now add multiple links to a single header, providing easy access to external trackers. The add-on supports both numeric and alphanumeric task IDs, giving users flexibility in how they organize and track their tasks.

Using Knilollert is just as straightforward. Users can add task codes within braces to their Trello card titles. For example, a card title can be "My card title with task link {1234}" or "such task link {PROJ-4217}". The task code can be placed anywhere within the title, allowing for easy tracking and organization of tasks.

Overall, Knilollert for Trello is a useful add-on that enhances the functionality of Trello by providing the ability to add external clickable tracker links to Trello card headers. Its straightforward configuration and usage make it a valuable tool for users who want to streamline their task management process.